electron arrangement

• Protons

  Positively charged particles that hang out in the nucleus
• Neutrons

  Neutral particles, meaning they don't have a charge
• Electrons

  Negatively charged particles
• The pattern for electron shells is 2,8,8,2
• covalent bonding: sharing of electrons between non-metals
• ionic bonding: transferring of electrons between metals and non metals
• lewis structure: diagram showing covalent bonds between atoms as lines or dots
• electrons are arranged in shells. The first shell is small and close to the nucleus so it can hold up to 2 electrons. the next shell can hold up to 8 electrons. and the last shell or known as the valence shell can hold up to 8 electrons. altogether it can hold 18
• what are noble gases ?

  are the elements in group 18 of the periodic table that rarely react with other elements because they have full shells of electrons and are already stable
• nuclear charge is the number of protons and neutrons in the nucleus of an atom